Fuel-oil-burner regulator



Oct. 27,1925.

. W. F. LEWIS FUEL OIL BURNER REGULATOR Filed Dec. 26, 1923 28 I I 27 l F 5 INVENTOR- as" 1 as Vl/i/ber/ E Lew/'5 477'0RNE) winner F. Lewis, or

PATENT OFFICE TKCOMA,*WAJSHINGTON, AssIGnoR or FORTY own-nun- FUEL-oIL-nuRNER REGuLA'rOR.

Kpplitation filed December 2c, 1923. Serial n 682653.

To all whom it may cancer n: e

Be it known that I, \VI-LBBRT F. Lewis, a citizen of the United. States, residing at Taco1na,- county of Pierce, and'State of lVashington, have invented a new and usefu-l Fuel-OiLBurner Regulator; and I do hereby declare that the following is a full, clear, and exact specification, such as will enable others skilled in ,the art to which it appertains to make and use the same.

The invention is a means for automatically regulating} the fuel and air ofan oil humor. it

The object-of the ihvention is to provide a means for automatically regulating the admission of the fuel and air to an oil burner which will operate similar to a governor and admit the mixture as the pressure decreases and shut it off as the pressure increases. j I

Tith these ends: inview the invention embodies needlevalves, that may he placed in the steam and oil-inlet passages and may be operated by common stem which is connected to a piston in acylinder that is connected to the boiler so that the piston will he afl'iected by the pressure of thesteam in the boiler. The stem between the needle valves is also provided with anequa'lizi-ng spring and connected to one end of a walking beam, the opposite end ofwhich is connected to a rod that is provided with a piston which is connected to the steam. pipe, beyond the throttle valve, and said rod is also provided with an equalizing spring and connected to a valve by. which the draft of the boiler may be regulated Other features and advantages of the invention will be seen from the following description taken in connection with the drawings wherein:

Figure 1 is a sectional view through the casing.

Figure 2 needle valve. I

Figure 3 is a sectionsiinilar to thatshown in Figure 1 showing an alternate arrangement. I

Figure L is a sectional plan showing the is a cross section through the arrangement of the valves int'he design shownin Figure 3.-

In the drawings I have shown my regulator as it would be constructed Where-in numeral 1 indicates the upper casing in which is a cylinder 2 that may be connected is a piston l that maybe constructed with a head 5 having a flange?) and a movable flange 7 which may be"cl amped againstjthe head or packing rings 8 therein by anut 9 on the piston rod 10. The rod may be screwed. into a threaded hole 11 inthe head 5. Below thefpistonis asleeve 12"with flanges 13 at its ends which is also screwed on the rod and free toanove upwardor downward as ma be desiredto adjust-the movement; and below this sleeve is an en'- larged portion 14 of the rod 1 0 which is threaded and provided with a nut'15 for holding a cap 16 of an equalizing springll' against the" upper end of the spring. It will be seen that by turning the nut" itwill be possible to adjust the tension of the spring. The spring 1''? seats upon a'web 18 in a casing 19' whichforms a housing for the rod and is attached to the lower en'd ol the upper casing 1. Below the web18 is a cross-bar 20 asshown in Figure QWhidliis adjustably held to the lower en'd o f'the rod 10 by nuts 21 and 22' andin which the needle valve stems 23 and 24ersscrewedand adjust'ahlyj held by nuts 25 and 26. Thelower ends of the valve stems passthrough stall:- ing boxes formedby nurse? and sleeves 28 which. engage sections 29 of the lower or base casing 30' which isattac'hed tothe lower end; of the casing 19. Below the stuliihg boxes are openings 31 which are connected to oil and steam pipes 32 that may be screwed into the sidefo'l? the casing as shown in Figure 1; and-"below the" openings 31 are valve seats 38 through which the oil and steam may passto openings 34fbelow and i'roin' tli'es'e through pipes 35 and36 to the burner, Itwi-ll be seen thatas the rod 10 moves upward and aewnwara it will open and close the valves and thereby permit" more orle'ss oil and steam to pass through. l

' Between the flanges 13' on theslem'e T2 at the upper end of the rod 10 are knobs 37 of a walking beam 38' which is pivotally mounted in the casingand provided with knobs 39 at tlieopposite end which engage flanges 40 jofa sleeve 41 that is similar to the sleeve 12. The walking beam 38 is mounted on a pin 42 and the sleeve ll is screwed on a rod 43 so that the travel of the rod orwalking bea'in in relation' to each other may he adjusted by screwing the tle valve. 7

Below the sleeve 41 is an equalizing spring similar to the spring 17 and inside of this is a nut 47 which engages the upper surface of the web 18 of the casing to limit the downward movement of the rod 43. Below the web is another nut 48 which may be screwed upward or downward on the rod to limit its upward movement and at the lower end of the rod is a sleeve 49 which forms the inner cylinder of a sliding valve 50.. This cylinder is constructed as shown in Figure 1 with large ports 51 adjacent its upper end, smaller ports 52 about midway of its length, and other smaller ports 53 at its lower end. Around the cylinder is a sleeve 54 which is also provided with large ports 55 adjacent its upper end, small ports 56 about midway of its length, and other small ports 57 adjacent its lower end. The base which forms the lower casing of the regulator is provided with an opening in which the sleeve 54 is held and other openings around the sleeve which correspond witlrthe ports and which are connected to outlet, inlet, and exhaust pipes. The opening 58 adjacent the upper end of the sleeve 54 corresponds with the openings 51 and in the valve and sleeve and is connected to a pipe 59 which may be connected to the draft regulator in such a manner that as pressure is admitted to the pipe 59 the draft will be opened and as the pressure is shut off the draft will be closed, or partly closed as may be desired. Belowthe opening 58 is another openin 60 which is connected by a pipe 61 to the boiler or any suitable means for supplying pressure, and below the opening 60 is another opening 62 which corre sponds to theports53 and 57 and is connected to an exhaust pipe 63.

In the design shown in Figure 3 thewalking beam is omitted and the steam pipe 46 brought into the lower end of the cylinder 2 so that as the throttle valve is turned on steam will be admitted directly to the under side of the piston 4 and the piston will be forced to the upper end of the cylinder as shown and the valve at the lower end will be opened, thus permitting a full supply of the steam and oil and also the air to be admitted to the burner, and it will be seen that asv the pressure of the steam in the boiler increases it will gradually force the piston downward and close the valve.

In the lower end of the cylinder is a threaded nut 64 which has a projection 65 on it upon which a nut 66 may be screwed to form a stufiing box. The arrangement of the valves at the lower end may be changed as shown inFigure 4 so that all three of them may be operated by the movenentofthe rod 10; otherwise, the-design is exactly the same as that shown in Figures 1 and 2.

It will be understood that changes may be made in the construction without departing from the spirit of the invention. One of which changes may be in the design of either of the casings; another may be in the design of thepiston; another may be inthe design or location of the walking beam; and still another may be in the type of valves used at the lower end.

The construction will be readily understood from the foregoing description. To use the device it'may be assembled as shown with the pipe 3 connected to the boiler, the

pipe 46 connected to the main steam line I just beyond the throttle valve, one of the pipes 32 connected to the oil supply andthe other to the boiler for supplying steam to the burner, the pipes 35 and 36 connected to the burner, the pipe 61 connected to the boiler or any suitable means for supplying pressure, the pipe 59 to the damper control, and the pipe 60 to any suitable point for exhaust.

The tension on the spring 17 will be adjusted so that normally the needle valves will just admit enough oil and steam to keep a low fire under the boiler or to keep the boiler at a given pressure, and as the pressure in the boiler increases or decreases the cylinder 2 which is connected to the boiler will operate the valves to admit more fuel to the burner as the pressure decreases and less fuel to the burner as the pressure increases. Asan engine or other object which may be connected to the boiler is started by operating the throttle valve the steam from the supply line will pass through the pipe 46 to the cylinder 45 and force the piston 44 downward, which through the walking beam will force the rod 10 upward and open the needle valves. At

the'same time the rod 43 will force the valve 50 downward to the position shown in Figure 1 so that the ports 52 and 56 will be in line and admit steam from the pipe 61 to the interior of the valve. The ports 51 and 55 being elongated and therefore, always open will permit the steam to pass through the pipe 59 to the damper regulator and hold it open.

It will be seen that as the rod 43 moves upward when the pressure is released the ports 52 and 56 Wlll move out of alignment and the ports 53 and 57 Wlll correspond so that the steam from the pipe 59 will pass through the valve to the exhaust pipe 60.

Having thus fully described the invention, what I claim as new and desire to secure by Letters Patent, is

1. A fuel oil burner regulator comprising needle valves inserted in the oil and steam passages to the burner; a cylinder connected to the boiler so that as pressure in the boiler increases the cylinder will close the needle valves; a spring for equalizing the pressure on the cylinder; another cylinder connected to the steam supply line beyond the throttle valve; a Walking beam for transmitting the movement of the piston in the latter cylinder to the piston in the former cylinder; and suitable valves operated by the movement of the cylinders for controlling a draft regulator.

2. A regulator of the type described having needle valves inserted in the steam and oil supply lines; a cyhnder connected to a boiler for operating the needle valves; a spring for equalizing the movement of the piston in the cylinder; another cylinder working in combination wth the former cylinder for opening the valves as an engine or other device operated by the boiler is started; a cylindrical valve also operated by the cylinder for regulating the draft; and suitable means for regulating the travel of the valve.

3. A device of the class described comprising valves in the oil and steam supply lines of a fuel oil burner; a cylinder "for closing the valves as pressure in a boiler fired by the burner increases; a spring for opening the valves as the pressure in the boiler decreases; another cylinder, the piston of which is connected with the piston of the former cylinder by a walking beam for opening the valves as steam is drawn from the boiler; and other valves connected to the cylinders for regulating the flow of steam to a draft regulator.

l. A fuel oil burner regulator having needle valves located in the oil and steam supply lines of the burner; a casing having suitable ports therein to which inlet and outlet pipes may be connected, and suitable stu'liing boxes for enclosing the valve stems; said valve stems being connected through a yoke to a rod, on the end of which is a piston and On which .is also a flanged sleeve and a spring; said piston operating in a cylinder that is connected by a suitable pipe to the boiler, said spring being mounted so that it will counteract the boiler pressure, and said sleeve being connected to the end or" a walking beam, the opposite end of which is attached to a similar sleeve on a piston 01 another cylinder, said latter cylinder being connected to the steam supply line leading from the boiler at a point heyond the throttle valve; means on the piston rod of the latter cylinder for limiting the movements of the pistons; and cylindrical valves attached to the piston rod of the latter cylinder for regulating the flow of steam to a damper regulator and also for regulating the exhaust of the damper regulator.

5. A fuel oil burner regulator having needle valves located in the oil and steam supply lines of the burner; said valve stems being connected through a yoke to a rod, on the end of which is a piston and on which is also a flanged sleeve and a spring; said piston operating in a cylinder that is connected by a suitable pipe to the boiler, said spring being mounted so that it will counteract the boiler pressure, and said sleeve being connected to the end of a walking beam, the opposite end of which is attached to a similar sleeve on a piston of another cylinder, said latter cylinder being connected to the steam supply line leading from the boiler at a point beyond the throttle valve; means on the piston rod of the latter cylinder for limiting the movements of the piston; and cylindrical valves attached to the piston rod of the latter cylinder for regulating the flow of steam to a damper regulator and also for regulating the exhaust of the damper regulator.

6. A fuel oil burner regulator having needle valves located in the oil and steam supply lines of the burner; a casing having suitable ports therein to which inlet and outlet pipes may be connected, and suitable stuffing boxes for enclosing the valve stems; said valve stems being connected through a yoke to a rod, on the end of which is a piston and on which is also a flanged sleeve; said piston operating in a cylinder that is connected by a suitable pipe to the boiler, said piston having resilient means that will counteract the boiler pressure, and said sleeve being connected to the end of a wall:- ing beam, the opposite end of which is attached to a similar sleeve on a piston of another cylinder, said latter cylinder being connected to the steam supply line leading from the boiler at a point beyond the throttle valve; means on the piston rod of the latter cylinder for limiting the movements of the pistons; and cylindrical valves attached to the piston rod of the latter cylinder for regulating the how of steam to a damper regulator and also for regulating the exhaust of the damper regulator.

VVILBERT F. LEWIS. 

